Thump, thump, thump mystery noise

[vbmike]

I'm VERY familar with the annoying transfer rod cluck and I've fix that. Not the problem.

I'm ordering a new bearing with a new set screw. I'll try that and the belt and see what happens.

 

[RAMSOMAIR]

Could be the transfer rod as radianguy says if it’s a clunk clunk

 

[vbmike]

Defiantly not the transfer rod. Does it on smooth trails.

 

[RX-1MAN]

Check bearing nut, #19 in secondary sheave parts listing. Mine came loose years ago when I had my '08 Apex. Could hear a thumping at slower speeds and actually felt it in the left footwell.

 

[vbmike]

That bearing nut is for the jack shaft. I checked and mine is tight. Going to order a new drive shaft bearing and set screw and see what happens with that.

 

[theCATman]

Pull the parking brake, caliper , & rotor off and carefully and slowly drive it see if the noise is present.

I had the same clunk clunk noise at slow speed on my 08 vector. Drove me nuts tracking it down. Turned out to be a combination the keyway on rotor & woodruff key had worn enough to create clunk as the rotor turned at slow speed. I sourced a used lower mileage rotor and a new woodruff key. Bam, no clunk.

So, try that. It's a possibility.

 

[Rsventuretf]

Any updates on this?